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  • 1
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    Dual Fano and Lorentzian line profile properties of autoionizing states (2015)
    American Physical Society (APS)
    Details
    Publication Date: 2015-06-25
    Description: Author(s): B. Tu, J. Xiao, K. Yao, Y. Shen, Y. Yang, D. Lu, W. X. Li, M. L. Qiu, X. Wang, C. Y. Chen, Y. Fu, B. Wei, C. Zheng, L. Y. Huang, B. H. Zhang, Y. J. Tang, R. Hutton, and Y. Zou Photon absorption spectroscopy is a powerful tool for uncovering the structure of atoms, molecules, and solids. Symmetric Lorentzian and asymmetric Fano line shapes are fundamental spectroscopic signatures related to the structural and dynamical properties. Recently, Ott et al. [ Science 340 , 716 (20... [Phys. Rev. A 91, 060502(R)] Published Mon Jun 22, 2015
    Keywords: Atomic and molecular structure and dynamics
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 2
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    Interaction of solar wind with the magnetopause-boundary layer and generation of magnetic impulse events (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-08-27
    Description: The transport of mass, momentum, energy and waves from the solar wind to the Earth's magnetosphere takes place in the magnetopause-boundary layer region. Various plasma processes that may occur in this region have been proposed and studied. In this paper, we present a brief review of the plasma processes in the dayside magnetopause-boundary layer. These processes include (1) flux transfer events at the dayside magnetopause, (2) formation of plasma vortices in the low-latitude boundary layer by the Kelvin-Helmholtz instability and coupling to the polar ionosphere, (3) the response of the magnetopause to the solar wind dynamic pressure pulses, and (4) the impulsive penetration of solar wind plasma filaments through the dayside magnetopause into the magnetospheric boundary layer. Through the coupling of the magnetopause-boundary layer to the polar ionosphere, those above processes may lead to occurrence of magnetic impulse events observed in the high-latitude stations.
    Keywords: GEOPHYSICS
    Type: Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169); 55; 7; p. 967-978.
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Coupling of magnetopause-boundary layer to the polar ionosphere (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The plasma dynamics in the low-latitude boundary layer and its coupling to the polar ionosphere under boundary conditions at the magnetopause are investigated. In the presence of a driven plasma flow along the magnetopause, the Kelvin-Helmholtz instability can develop, leading to the formation and growth of plasma vortices in the boundary layer. The finite ionospheric conductivity leads to the decay of these vortices. The competing effect of the formation and decay of vortices leads to the formation of strong vortices only in a limited region. Several enhanced field-aligned power density regions associated with the boundary layer vortices and the upward field-aligned current (FAC) filaments can be found along the postnoon auroral oval. These enhanced field-aligned power density regions may account for the observed auroral bright spots.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 98; A4; p. 5707-5725.
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Streaming sausage, kink and tearing instabilities in a current sheet with applications to the earth's magnetotail (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: This paper investigates the growth rates and eigenmode structures of the streaming sausage, kink, and tearing instabilities in a current sheet with a super-Alfvenic flow. The growth rates and eigenmode structures are first considered in the ideal incompressible limit by using a four-layer model, as well as a more realistic case in which all plasma parameters and the magnetic field vary continuously along the direction perpendicular to the magnetic field and plasma flow. An initial-value method is applied to obtain the growth rate and eigenmode profiles of the fastest growing mode, which is either the sausage mode or kink mode. It is shown that, in the earth's magnetotail, where super-Alfvenic plasma flows are observed in the plasma sheet and the ratio between the plasma and magnetic pressures far away from the current layer is about 0.1-0.3 in the lobes, the streaming sausage and streaming tearing instabilities, but not kink modes, are likely to occur.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 93; 7354-736
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    A simulation study of the vortex structure in the low-latitude boundary layer (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 95; 20793-20
    Format: text
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    NASA TECHNICAL REPORTS
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